Features: Upgraded your trampolines setup with these durability T hook spring pullers, designed for assembly and disassembly of spring from 5" to 12" with enhances corrosions resistance. Features carbon steel construction with antislip ergonomic handle for safely grip and 13cm hook length to safely tension trampolines spring without tool. Ideal for homeowners, fitness trainers, and outdoor recreations organizers requiring reliable equipment for frequent trampolines maintenance. Perfect for backyard installations, commercial gym spring replacements, or adventure park equipment adjustments where quickly spring tensioning matter. Engineered with environment protecting galvanized coating, these 210g trampolines spring tool withstand repeated use while maintaining structural integrity across temperature variation. Specifications: Dimension:11.5×13.4cm/4.53×5.28in Component:carbon steel Package Includes: 6pcs Heavy Type trampolines Spring Hook note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you will not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual color.